Best for
Free
Aquarists who want one reliable record of the aquarium before layering on tests, livestock, AI, or future automation.
Live app
Model containers, equipment, plumbing, power, data topology, and effective volume so every other capability has the right context.
What you can do
Best for
Aquarists who want one reliable record of the aquarium before layering on tests, livestock, AI, or future automation.
Typical workflows
What you get
Where it sits in the twin
Systems is the foundation of the twin. It gives every other app the aquarium structure, equipment context, topology, water type, and effective volume it needs.
The free tier includes 1 active aquarium system, with inactive systems retained when limits change.
Start free